Question juridique clé
Whether the appellant could consult the Swiss request for mutual legal assistance addressed to Belgium.
Solution extraite
The request file was not accessible; the appellant had no sufficient interest in consulting a document without direct impact on the grant of assistance.
Motifs extraits
The prior Swiss request was not part of the mutual-assistance file; admissibility was assessed only on the formal request and annexes. Any premature transmission by Switzerland did not justify refusing later assistance.